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let
src = builtins.fetchGit {
url = "https://git.deuxfleurs.fr/lx/wgautomesh";
rev = "43eced6e9aa5935b4553251604207f72bf0214c1";
};
wgautomesh = (import src).packages.x86_64-linux.default;
in
{ lib, config, pkgs, ... }:
with lib;
let
cfg = config.services.wgautomesh;
in
with builtins;
{
options.services.wgautomesh = {
enable = mkEnableOption "wgautomesh";
interface = mkOption {
type = types.str;
description = "Wireguard interface to manage";
};
gossipPort = mkOption {
type = types.port;
description = "wgautomesh gossip port";
};
gossipSecretFile = mkOption {
type = types.nullOr types.str;
description = "File containing the gossip secret encryption key";
};
lanDiscovery = mkOption {
type = types.bool;
default = true;
description = "Enable discovery using LAN broadcast";
};
openFirewall = mkOption {
type = types.bool;
default = true;
description = "Automatically open gossip port in firewall";
};
upnpForwardPublicPort = mkOption {
type = types.nullOr types.port;
default = null;
description = "Public port number to try to redirect to this machine using UPnP IGD";
};
peers = mkOption {
type = types.listOf (types.submodule {
options = {
pubkey = mkOption {
type = types.str;
description = "Wireguard public key";
};
address = mkOption {
type = types.str;
description = "Wireguard peer address";
};
endpoint = mkOption {
type = types.nullOr types.str;
description = "bootstrap endpoint";
};
};
});
description = "wgautomesh peer list";
};
};
config = mkIf cfg.enable (
let
peerDefs = map (peer:
let endpointDef = if peer.endpoint == null then ""
else ''endpoint = "${peer.endpoint}"'';
in
''
[[peers]]
pubkey = "${peer.pubkey}"
address = "${peer.address}"
${endpointDef}
'') cfg.peers;
extraDefs = (if cfg.lanDiscovery then ["lan_discovery = true"] else [])
++ (if (cfg.gossipSecretFile != null)
then [''gossip_secret_file = "${cfg.gossipSecretFile}"''] else [])
++ (if (cfg.upnpForwardPublicPort != null)
then [''upnp_forward_external_port = ${toString cfg.upnpForwardPublicPort}''] else []);
configfile = pkgs.writeText "wgautomesh.toml" ''
interface = "${cfg.interface}"
gossip_port = ${toString cfg.gossipPort}
${concatStringsSep "\n" extraDefs}
${concatStringsSep "\n" peerDefs}
'';
in {
systemd.services.wgautomesh = {
enable = true;
path = [ pkgs.wireguard-tools ];
environment = {
RUST_LOG = "wgautomesh=info";
};
description = "wgautomesh";
serviceConfig = {
Type = "simple";
ExecStart = "${wgautomesh}/bin/wgautomesh ${configfile}";
Restart = "always";
RestartSec = "30";
ExecStartPre = [ "+${pkgs.coreutils}/bin/chown wgautomesh /var/lib/wgautomesh/gossip_secret" ];
DynamicUser = true;
User = "wgautomesh";
StateDirectory = "wgautomesh";
StateDirectoryMode = "0700";
AmbientCapabilities = "CAP_NET_ADMIN CAP_NET_BIND_SERVICE";
CapabilityBoundingSet = "CAP_NET_ADMIN CAP_NET_BIND_SERVICE";
};
wantedBy = [ "multi-user.target" ];
};
networking.firewall.allowedUDPPorts = mkIf cfg.openFirewall [ cfg.gossipPort ];
});
}
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